_:vb897200	<http://www.w3.org/2002/07/owl#onProperty>	<http://www.w3.org/2002/12/cal/icaltzd#due> .
<http://www.w3.org/2002/12/cal/icaltzd#Vtodo>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	_:vb897200 .
_:vb897200	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
_:vb897200	<http://www.w3.org/2002/07/owl#minCardinality>	"0"^^<http://www.w3.org/2001/XMLSchema#integer> .